... factory.Itemphone boxSizeCustomized sizeMaterialIvory board(250G,300G, 350G...etc)Art paper(128G, 157G, 200G, 250G, 300G...etc)Duplex board with grey ... , 300G, 350G, 400G...etc)Kraft paper(100G, 120G, 150G, 200G, 250G, 300G...etc)Corrugated paper(A, B, C, E grade)Color1-4C or ...